InPlaceHostingManager Classe

Definizione

Installa o aggiorna una distribuzione di ClickOnce in un computer.Install or update a ClickOnce deployment on a computer.

public ref class InPlaceHostingManager : IDisposable
public class InPlaceHostingManager : IDisposable
type InPlaceHostingManager = class
    interface IDisposable
Public Class InPlaceHostingManager
Implements IDisposable
Ereditarietà
InPlaceHostingManager
Implementazioni

Esempi

Nell'esempio di codice seguente viene illustrato come InPlaceHostingManager utilizzare per installare ClickOnceClickOnce un'applicazione a livello di programmazione su un computer client.The following code example shows how to use InPlaceHostingManager to install a ClickOnceClickOnce application programmatically on a client computer.

InPlaceHostingManager iphm = null;

public void InstallApplication(string deployManifestUriStr)
{
    try
    {
        Uri deploymentUri = new Uri(deployManifestUriStr);
        iphm = new InPlaceHostingManager(deploymentUri, false);
    }
    catch (UriFormatException uriEx)
    {
        MessageBox.Show("Cannot install the application: " + 
            "The deployment manifest URL supplied is not a valid URL. " +
            "Error: " + uriEx.Message);
        return;
    }
    catch (PlatformNotSupportedException platformEx)
    {
        MessageBox.Show("Cannot install the application: " + 
            "This program requires Windows XP or higher. " +
            "Error: " + platformEx.Message);
        return;
    }
    catch (ArgumentException argumentEx)
    {
        MessageBox.Show("Cannot install the application: " + 
            "The deployment manifest URL supplied is not a valid URL. " +
            "Error: " + argumentEx.Message);
        return;
    }

    iphm.GetManifestCompleted += new EventHandler<GetManifestCompletedEventArgs>(iphm_GetManifestCompleted);
    iphm.GetManifestAsync();
}

void iphm_GetManifestCompleted(object sender, GetManifestCompletedEventArgs e)
{
    // Check for an error.
    if (e.Error != null)
    {
        // Cancel download and install.
        MessageBox.Show("Could not download manifest. Error: " + e.Error.Message);
        return;
    }

    // bool isFullTrust = CheckForFullTrust(e.ApplicationManifest);

    // Verify this application can be installed.
    try
    {
        // the true parameter allows InPlaceHostingManager
        // to grant the permissions requested in the applicaiton manifest.
        iphm.AssertApplicationRequirements(true) ; 
    }
    catch (Exception ex)
    {
        MessageBox.Show("An error occurred while verifying the application. " +
            "Error: " + ex.Message);
        return;
    }

    // Use the information from GetManifestCompleted() to confirm 
    // that the user wants to proceed.
    string appInfo = "Application Name: " + e.ProductName;
    appInfo += "\nVersion: " + e.Version;
    appInfo += "\nSupport/Help Requests: " + (e.SupportUri != null ?
        e.SupportUri.ToString() : "N/A");
    appInfo += "\n\nConfirmed that this application can run with its requested permissions.";
    // if (isFullTrust)
    // appInfo += "\n\nThis application requires full trust in order to run.";
    appInfo += "\n\nProceed with installation?";

    DialogResult dr = MessageBox.Show(appInfo, "Confirm Application Install",
        MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
    if (dr != System.Windows.Forms.DialogResult.OK)
    {
        return;
    }

    // Download the deployment manifest. 
    iphm.DownloadProgressChanged += new EventHandler<DownloadProgressChangedEventArgs>(iphm_DownloadProgressChanged);
    iphm.DownloadApplicationCompleted += new EventHandler<DownloadApplicationCompletedEventArgs>(iphm_DownloadApplicationCompleted);

    try
    {
        // Usually this shouldn't throw an exception unless AssertApplicationRequirements() failed, 
        // or you did not call that method before calling this one.
        iphm.DownloadApplicationAsync();
    }
    catch (Exception downloadEx)
    {
        MessageBox.Show("Cannot initiate download of application. Error: " +
            downloadEx.Message);
        return;
    }
}

/*
private bool CheckForFullTrust(XmlReader appManifest)
{
    if (appManifest == null)
    {
        throw (new ArgumentNullException("appManifest cannot be null."));
    }

    XAttribute xaUnrestricted =
        XDocument.Load(appManifest)
            .Element("{urn:schemas-microsoft-com:asm.v1}assembly")
            .Element("{urn:schemas-microsoft-com:asm.v2}trustInfo")
            .Element("{urn:schemas-microsoft-com:asm.v2}security")
            .Element("{urn:schemas-microsoft-com:asm.v2}applicationRequestMinimum")
            .Element("{urn:schemas-microsoft-com:asm.v2}PermissionSet")
            .Attribute("Unrestricted"); // Attributes never have a namespace

    if (xaUnrestricted != null)
        if (xaUnrestricted.Value == "true")
            return true;

    return false;
}
*/

void iphm_DownloadApplicationCompleted(object sender, DownloadApplicationCompletedEventArgs e)
{
    // Check for an error.
    if (e.Error != null)
    {
        // Cancel download and install.
        MessageBox.Show("Could not download and install application. Error: " + e.Error.Message);
        return;
    }

    // Inform the user that their application is ready for use. 
    MessageBox.Show("Application installed! You may now run it from the Start menu.");
}

void iphm_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
{
    // you can show percentage of task completed using e.ProgressPercentage
}
    Dim WithEvents iphm As InPlaceHostingManager = Nothing

    Public Sub InstallApplication(ByVal deployManifestUriStr As String)
        Try
            Dim deploymentUri As New Uri(deployManifestUriStr)
            iphm = New InPlaceHostingManager(deploymentUri, False)
            MessageBox.Show("Created the object.")
        Catch uriEx As UriFormatException
            MessageBox.Show("Cannot install the application: " & _
                            "The deployment manifest URL supplied is not a valid URL." & _
                            "Error: " & uriEx.Message)
            Return
        Catch platformEx As PlatformNotSupportedException
            MessageBox.Show("Cannot install the application: " & _
                            "This program requires Windows XP or higher. " & _
                            "Error: " & platformEx.Message)
            Return
        Catch argumentEx As ArgumentException
            MessageBox.Show("Cannot install the application: " & _
                            "The deployment manifest URL supplied is not a valid URL." & _
                            "Error: " & argumentEx.Message)
            Return
        End Try

        iphm.GetManifestAsync()
    End Sub

    Private Sub iphm_GetManifestCompleted(ByVal sender As Object, ByVal e As GetManifestCompletedEventArgs) Handles iphm.GetManifestCompleted
        ' Check for an error.
        If (e.Error IsNot Nothing) Then
            ' Cancel download and install.
            MessageBox.Show("Could not download manifest. Error: " & e.Error.Message)
            Return
        End If

        ' Dim isFullTrust As Boolean = CheckForFullTrust(e.ApplicationManifest)

        ' Verify this application can be installed.
        Try
            ' the true parameter allows InPlaceHostingManager
            ' to grant the permissions requested in the application manifest. 
            iphm.AssertApplicationRequirements(True)
        Catch ex As Exception
            MessageBox.Show("An error occurred while verifying the application. " & _
                            "Error text: " & ex.Message)
            Return
        End Try

        ' Use the information from GetManifestCompleted() to confirm 
        ' that the user wants to proceed.
        Dim appInfo As String = "Application Name: " & e.ProductName
        appInfo &= ControlChars.Lf & "Version: " & e.Version.ToString()
        appInfo &= ControlChars.Lf & "Support/Help Requests: "

        If Not (e.SupportUri Is Nothing) Then
            appInfo &= e.SupportUri.ToString()
        Else
            appInfo &= "N/A"
        End If

        appInfo &= ControlChars.Lf & ControlChars.Lf & _
            "Confirmed that this application can run with its requested permissions."

        ' If isFullTrust Then
        '    appInfo &= ControlChars.Lf & ControlChars.Lf & _
        '        "This application requires full trust in order to run."
        ' End If

        appInfo &= ControlChars.Lf & ControlChars.Lf & "Proceed with installation?"

        Dim dr As DialogResult = MessageBox.Show(appInfo, _
            "Confirm Application Install", MessageBoxButtons.OKCancel, MessageBoxIcon.Question)
        If dr <> System.Windows.Forms.DialogResult.OK Then
            Return
        End If

        ' Download the deployment manifest. 
        ' Usually, this shouldn't throw an exception unless 
        ' AssertApplicationRequirements() failed, or you did not call that method
        ' before calling this one.
        Try
            iphm.DownloadApplicationAsync()
        Catch downloadEx As Exception
            MessageBox.Show("Cannot initiate download of application. Error: " & downloadEx.Message)
            Return
        End Try
    End Sub

#If 0 Then
    Private Function CheckForFullTrust(ByVal appManifest As XmlReader) As Boolean
        Dim isFullTrust As Boolean = False

        If (appManifest Is Nothing) Then
            Throw New ArgumentNullException("appManifest cannot be null.")
        End If

        Dim xaUnrestricted As XAttribute
        xaUnrestricted = XDocument.Load(appManifest) _
            .Element("{urn:schemas-microsoft-com:asm.v1}assembly") _
            .Element("{urn:schemas-microsoft-com:asm.v2}trustInfo") _
            .Element("{urn:schemas-microsoft-com:asm.v2}security") _
            .Element("{urn:schemas-microsoft-com:asm.v2}applicationRequestMinimum") _
            .Element("{urn:schemas-microsoft-com:asm.v2}PermissionSet") _
            .Attribute("Unrestricted")  ' Attributes never have a namespace


        If xaUnrestricted Then
            If xaUnrestricted.Value = "true" Then
                Return True
            End If
        End If

        Return False
    End Function
#End If

    Private Sub iphm_DownloadProgressChanged(ByVal sender As Object, ByVal e As DownloadProgressChangedEventArgs) Handles iphm.DownloadProgressChanged
        ' you can show percentage of task completed using e.ProgressPercentage
    End Sub

    Private Sub iphm_DownloadApplicationCompleted(ByVal sender As Object, ByVal e As DownloadApplicationCompletedEventArgs) Handles iphm.DownloadApplicationCompleted
        ' Check for an error.
        If (e.Error IsNot Nothing) Then
            ' Cancel download and install.
            MessageBox.Show("Could not download and install application. Error: " & e.Error.Message)
            Return
        End If

        ' Inform the user that their application is ready for use. 
        MessageBox.Show("Application installed! You may now run it from the Start menu.")
    End Sub

Commenti

È possibile utilizzare InPlaceHostingManager per scrivere programmi che installano ClickOnceClickOnce applicazioni a livello di codice.You can use InPlaceHostingManager to write programs that install ClickOnceClickOnce applications programmatically. Ad esempio, è possibile usare questa classe in un ambiente di software di gestione del sistema controllato (SMS) o in situazioni in cui è necessaria un'installazione complessa che esegue una serie di operazioni di pre-installazione o post-installazione nel computer locale.For example, you can use this class in a controlled system management software (SMS) environment or in situations where you need a complex installation that performs a number of pre-installation or post-installation operations on the local computer. In genere, è consigliabile usare i membri di questa classe in un ordine specifico:Generally, you will want to use the members of this class in a specific order:

  1. Creare una nuova istanza della classe InPlaceHostingManager.Create a new instance of InPlaceHostingManager.

  2. Scaricare il manifesto di distribuzione usando GetManifestAsync.Download the deployment manifest by using GetManifestAsync.

  3. Verificare che l'applicazione possa essere eseguita con le autorizzazioni appropriate utilizzando AssertApplicationRequirements.Check that the application can be run with the appropriate permissions by using AssertApplicationRequirements.

  4. Scaricare e installare l'applicazione DownloadApplicationAsynctramite.Download and install the application by using DownloadApplicationAsync.

  • Se si chiama uno di questi parametri non ordinati, viene generata un'eccezione.If you call any of these parameters out of order, they will throw an exception.

InPlaceHostingManagerconsente di installare ClickOnceClickOnce un'applicazione, ma non di eseguirla.InPlaceHostingManager can install a ClickOnceClickOnce application, but cannot execute it. Alcuni metodi di questa classe, ad esempio Execute, sono riservati per l'uso in caso di download di un'applicazione basata su Windows Presentation Foundation eseguita all'interno di un Web browser.Some methods in this class, such as Execute, are reserved for use when downloading a Windows Presentation Foundation-based application that runs inside a Web browser.

Per utilizzare InPlaceHostingManager per scaricare e installare le applicazioni, è necessario assicurarsi che il certificato per la firma ClickOnceClickOnce delle applicazioni che si intende installare sia già installato nei computer client come autore attendibile.To use InPlaceHostingManager to download and install applications, you must make sure that the certificate for signing the ClickOnceClickOnce applications you plan to install is already installed on client computers as a trusted publisher. Per ulteriori informazioni sugli autori attendibili, vedere Cenni preliminari sulla distribuzione di applicazioni attendibili.For more information on trusted publishers, see Trusted Application Deployment Overview.

Nota

Attualmente esiste una limitazione del prodotto che impedisce InPlaceHostingManager il corretto funzionamento di quando si esegue il debug del codice con Visual Studio.There is currently a product limitation that prevents InPlaceHostingManager from working correctly when you debug your code using Visual Studio. Se si esegue il debug dell'applicazione in Visual Studio usando il tasto F5, l'esempio genererà eccezioni misteriose quando DownloadApplicationAsyncsi chiama.If you debug your application in Visual Studio by using the F5 key, the sample will throw mysterious exceptions when you call DownloadApplicationAsync. Per eseguire il debug con Visual Studio, avviare l'applicazione senza eseguire il debug e quindi alleghi il debugger.To debug using Visual Studio, start the application without debugging, and then attach the debugger. In alternativa, è possibile usare un altro debugger, ad esempio WinDbg.Alternatively, you can use another debugger, such as WinDbg.

Costruttori

InPlaceHostingManager(Uri)

Crea una nuova istanza della classe InPlaceHostingManager per scaricare e installare l'applicazione ospitata dal browser specificata.Creates a new instance of InPlaceHostingManager to download and install the specified browser-hosted application.

InPlaceHostingManager(Uri, Boolean)

Crea una nuova istanza della classe InPlaceHostingManager per scaricare e installare l'applicazione specificata, che può essere un'applicazione Windows Form autonoma o un'applicazione ospitata in un browser.Creates a new instance of InPlaceHostingManager to download and install the specified application, which can be either a stand-alone Windows Forms-based application or an application hosted in a Web browser.

Metodi

AssertApplicationRequirements()

Determina se l'applicazione ClickOnceClickOnce dispone delle autorizzazioni e delle dipendenze di piattaforma appropriate per l'esecuzione sul computer locale.Determines whether the ClickOnceClickOnce application has the appropriate permissions and platform dependencies to run on the local computer.

AssertApplicationRequirements(Boolean)

Determina se l'applicazione ClickOnceClickOnce dispone delle autorizzazioni e delle dipendenze di piattaforma appropriate per l'esecuzione sul computer locale.Determines whether the ClickOnceClickOnce application has the appropriate permissions and platform dependencies to run on the local computer.

CancelAsync()

Annulla un'operazione di download asincrono.Cancels an asynchronous download operation.

Dispose()

Rilascia tutte le risorse usate da InPlaceHostingManager.Releases all resources used by the InPlaceHostingManager.

DownloadApplicationAsync()

Scarica un aggiornamento di applicazione in background.Downloads an application update in the background.

Equals(Object)

Determina se l'oggetto specificato è uguale all'oggetto corrente.Determines whether the specified object is equal to the current object.

(Ereditato da Object)
Execute()

Avvia l'applicazione ClickOnceClickOnce solo se si tratta di un'applicazione Windows Presentation Foundation in esecuzione in un browser.Launches the ClickOnceClickOnce application, if and only if it is a Windows Presentation Foundation-based application running in a Web browser.

GetHashCode()

Funge da funzione hash predefinita.Serves as the default hash function.

(Ereditato da Object)
GetManifestAsync()

Scarica in background il manifesto di distribuzione dell'applicazione ClickOnceClickOnce e genera un evento al completamento dell'operazione o in caso di errore.Downloads the deployment manifest of the ClickOnceClickOnce application in the background, and raises an event when the operation has either completed or encountered an error.

GetType()

Ottiene l'oggetto Type dell'istanza corrente.Gets the Type of the current instance.

(Ereditato da Object)
MemberwiseClone()

Crea una copia superficiale dell'oggetto Object corrente.Creates a shallow copy of the current Object.

(Ereditato da Object)
ToString()

Restituisce una stringa che rappresenta l'oggetto corrente.Returns a string that represents the current object.

(Ereditato da Object)
UninstallCustomAddIn(String)

Rimuove un componente di un’applicazione definito dall’utente installato precedentemente.Removes a previously installed user-defined component of an application.

UninstallCustomUXApplication(String)

Rimuove un'applicazione ClickOnceClickOnce che include l'elemento <customUX>.Removes a ClickOnceClickOnce application that includes the <customUX> element.

Eventi

DownloadApplicationCompleted

Si verifica al termine del download dell'applicazione sul computer locale.Occurs when the application has finished downloading to the local computer.

DownloadProgressChanged

Si verifica in corrispondenza alla modifica dello stato di download di un'applicazione o di un manifesto.Occurs when there is a change in the status of an application or manifest download.

GetManifestCompleted

Si verifica al termine del download del manifesto di distribuzione sul computer locale.Occurs when the deployment manifest has been downloaded to the local computer.

Si applica a